Special double-color ten-bead no-girder combined abacus for infant

The utility model discloses a special double-color ten-bead no-girder combined abacus for an infant, which comprises a frame arranged at the periphery and one or more than one bars fixed on the frame; each bar is sheathed and connected with at least two groups of bead strands; each group of bead str...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	QI LIXIA, WU XIULI, WANG ZENGFA, GENG XIANGFEN, GENG CHUNXIA, WANG CAIHONG, WANG YANMIN, GENG RONGFANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADVERTISING APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE CALCULATING COMPUTING COUNTING CRYPTOGRAPHY DIAGRAMS DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTEDMECHANICALLY DISPLAY EDUCATION EDUCATIONAL OR DEMONSTRATION APPLIANCES GLOBES PHYSICS PLANETARIA SEALS
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Beschreibung
Zusammenfassung:	The utility model discloses a special double-color ten-bead no-girder combined abacus for an infant, which comprises a frame arranged at the periphery and one or more than one bars fixed on the frame; each bar is sheathed and connected with at least two groups of bead strands; each group of bead strand comprises five beads; and the bead surfaces of the two groups of bead strands are coated with coatings with different colors. Compared with the existing abacus, beams are cancelled, each bar is provided with at least two groups of bead strands, and each group of bead strand is coated with coatings with different colors so as to be differentiated. Compared with the traditional abacus, the abacus is more suitable for the use of the infant, and can be used as an accessory appliance for the ordinary arithmetic study, so as to help the infant to achieve the aims of quick calculation and mental arithmetic.